PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16021525-1 2005 Perlecan is a modular heparan sulphate and/or chondroitin sulphate substituted proteoglycan of basement membrane, vascular tissues and cartilage. Chondroitin Sulfates 46-66 perlecan Ovis aries 0-8